Many of the Michael Gallagher/Tom Bunk one-page gags employ this, particularly with Bunk's over-the-top grotesque and gory art. For instance:
A kid pops a zit and ends up swallowed by his own pus and gore.
As seen at Agony of the Feet, man buys magnetic insoles for his shoes which are so strong that they pull an entire shelf full of sharp knives down through his feet, followed by an entire refrigerator crushing him to death.
Rock music fans try to crash a concert by pushing a chain link fence down. However, the fence is so heavily reinforced that it just slices their bodies to smithereens instead.
A nurse is drawing blood from a patient, but gets distracted by a phone call. When she returns, the patient is dead and dried-out, and their IV bag is gushing blood.
The first time they show Troll-Ra in ThunderLOLCats is kinda creepy for people who've rarely seen a troll face, before.
One short segment features a dog fetching a bone and a skeleton pops out of a grave saying he's eating his shin.
In Fantastic Megan Fox, Megan Fox is reimagined as a fox who steals other actresses' body parts (Kristen Stewart's hair, Scarlett Johanssen's eyesnote though the camera focused on her breasts, and Angelina Jolie's lips) so she can be the next hot Hollywood star.
The Zombi (Bambi meets Night of the Living Dead) sketch is a little disturbing for young viewers.
The dolls melting in Flammable (the claymation parody of Katy Perry's "Fireworks" video), is pretty creepy when you look at it.
A Mike Wartella cartoon, features a scene were a lady walks into the kitchen, minding her own business, when suddenly, the Grim Reaper appears from nowhere and then outright kills her.